A waterproof connector

Abstract

This utility model belongs to the field of connectors, specifically relating to a waterproof connector, including a male housing and male terminals, a female housing and female terminals. The male and female housings are interlocked, forming a mating cavity. A sealing ring is provided in the mating cavity to seal with the male and female housings. The male and female housings are respectively provided with male terminal wiring holes and female terminal wiring holes for external wire harnesses to pass through. A sealing plug is provided in the male terminal wiring hole and female terminal wiring hole respectively. The external wire harness passes through the sealing hole of the sealing plug and is connected to the male terminal and female terminal respectively. The sealing ring in the mating cavity of the male and female housings prevents rainwater from entering the connector from the connection between the male and female housings, and the sealing plug prevents rainwater from entering the connector from the external wire harness, male terminal wiring hole, and female terminal wiring hole. The multi-directional sealing structure design provides better waterproof performance.

Description

Technical Field

[0001] This utility model belongs to the field of connector technology, and specifically relates to a waterproof connector. Background Technology

[0002] A connector is a device that connects two active devices and is used to transmit current or signals. The main application areas for electrical connectors include transportation, communication, networking, IT, medical, and home appliances. The rapid development of product technology and the rapid growth of the market in these application areas have strongly driven the development of connector technology. To date, connectors have evolved into a series of specialized products with a complete range of types and specifications, diverse structures, specialized focuses, distinct industry characteristics, and standardized systems. A connector consists of a male housing, male terminals housed within the male housing, a female housing, and female terminals housed within the female housing and mating with the male terminals.

[0003] The existing connectors have inadequate waterproofing. Rainwater can easily enter the connector from the connection point between the male and female housings, and can also travel along the wiring harness into both the male and female housings. Therefore, these connectors cannot meet the requirements for use in harsh environments. Furthermore, when used in vibration environments, the male and female terminals are prone to momentary disconnections, resulting in unreliable connections. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a waterproof connector that has reliable connection and good waterproof performance, and can meet the requirements for use in harsh environments.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A waterproof connector includes a male housing and a male terminal disposed within the male housing, a female housing and a female terminal disposed within the female housing, wherein the male housing and the female housing are interlocked, and an interlocking cavity is formed between the male housing and the female housing, wherein a sealing ring is disposed within the interlocking cavity to seal and cooperate with the male housing and the female housing, wherein the male housing and the female housing are respectively provided with a male terminal wiring hole and a female terminal wiring hole for external wire harnesses to pass through, wherein a sealing plug is disposed within the male terminal wiring hole and the female terminal wiring hole, wherein the external wire harness passes through the sealing hole of the sealing plug and is respectively connected to the male terminal and the female terminal.

[0006] In some embodiments, multiple sealing protrusions that fit onto the male and female rubber shells are respectively provided on both sides of the sealing ring.

[0007] In some embodiments, one end of the female terminal has a plug-in frame that mates with the male terminal, and one end of the male terminal has a insert that passes through the plug-in frame.

[0008] In some embodiments, a contact spring is provided in the plug-in frame, and the tail of the contact spring abuts against one side of the plug-in.

[0009] In some embodiments, the plug frame is provided with a contact protrusion that abuts against the other side of the plug piece.

[0010] In some embodiments, the plug-in frame is provided with a limiting groove, and the mother shell is provided with an anti-disengagement plate that engages with the limiting groove.

[0011] In some embodiments, one end of the anti-disengagement plate is provided with a protrusion that engages with the limiting groove, the side of the protrusion facing the male rubber shell is provided with a limiting inclined surface that engages with the limiting groove, the side of the protrusion facing away from the male rubber shell is provided with a guide inclined surface, and the plug-in frame is provided with a guide arc surface that engages with the guide inclined surface.

[0012] In some embodiments, the female rubber shell is provided with a insertion groove that mates with the male rubber shell, an elastic buckle plate is provided in the insertion groove, and two protrusions are symmetrically provided on the male rubber shell that pass through the insertion groove, and a locking block that engages with the elastic buckle plate is provided between the two protrusions.

[0013] In some embodiments, one end of the elastic buckle has an unlocking pressing part, and the other end of the elastic buckle has a locking hole that engages with the locking block.

[0014] In some embodiments, the female rubber shell is provided with a guide slot, and the male rubber shell is provided with a guide protrusion that passes through the guide slot.

[0015] The beneficial effects of this utility model are as follows: the sealing ring in the mating cavity of the male and female shells can prevent rainwater from entering the connector from the connection between the male and female shells, and the sealing plug can prevent rainwater from entering the connector from the external wire harness, male terminal wiring hole and female terminal wiring hole. The multi-directional sealing structure design has better waterproof performance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0018] Figure 2This is a cross-sectional view of an embodiment of the present utility model;

[0019] Figure 3 This is an exploded view of an embodiment of the present utility model;

[0020] Figure 4 This is a perspective view of the female terminal in an embodiment of the present invention. Detailed Implementation

[0021] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0023] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0025] like Figure 1-3 As shown, a waterproof connector includes a male housing 1 and a male terminal 2 disposed within the male housing 1, and a female housing 3 and a female terminal 4 disposed within the female housing 3. The male housing 1 and the female housing 3 are interlocked, forming a mating cavity 100 between them. A sealing ring 5 is disposed within the mating cavity 100 to seal against the male housing 1 and the female housing 3. The male housing 1 and the female housing 3 are respectively provided with a male terminal wiring hole 11 and a female terminal wiring hole 31 for external wire harnesses to pass through. A sealing plug 6 is disposed within the male terminal wiring hole 11 and the female terminal wiring hole 31, respectively. The external wire harness passes through the sealing hole 61 of the sealing plug 6 and is connected to the male terminal 2 and the female terminal 4, respectively. Multiple sealing protrusions 51 are respectively provided on both sides of the sealing ring 5 to fit against the male housing 1 and the female housing 3. The sealing ring engages with the male and female rubber shells through multiple sealing protrusions. The elastic deformation of the sealing protrusions allows them to fit tightly against the male and female rubber shells, generating higher contact pressure when under pressure, which helps to improve sealing performance.

[0026] like Figure 2-4 As shown, the female terminal 4 has a connector frame 41 at one end that mates with the male terminal 2, and the male terminal 2 has a tab 21 inserted into the connector frame 41 at one end. The female terminal is connected to the tab of the male terminal through the connector frame. The connector frame adopts a fully enclosed structure design, which ensures a more reliable connection between the female and male terminals. A contact spring 42 is provided inside the connector frame 41, and the tail of the contact spring 42 abuts against one side of the tab 21. The contact spring inside the connector frame abuts against the tab of the male terminal. The contact spring can increase the contact pressure, which can ensure a more reliable contact between the female and male terminals, prevent the momentary disconnection between the female and male terminals, and meet the requirements for use in vibration environments. A contact protrusion 43 is provided inside the connector frame 41, and the contact protrusion 43 abuts against the other side of the tab 21. The connector frame contacts the prongs via contact protrusions. These protrusions increase contact pressure, ensuring more reliable contact between the female terminal's connector frame and the male terminal's prongs, meeting the requirements for use in vibration environments. The connector frame 41 has a limiting groove 44, and the female housing 3 has an anti-disengagement plate 32 that engages with the limiting groove 44. The anti-disengagement plate prevents loosening, ensuring a tighter and more secure connection between the female terminal and the female housing. One end of the anti-disengagement plate 32 has a protrusion 321 that engages with the limiting groove 44. The protrusion 321 facing the male housing 1 has a limiting slope 3211 that engages with the limiting groove 44, and the protrusion 321 facing away from the male housing 1 has a guide slope 3212. The connector frame 41 has a guide arc surface 411 that engages with the guide slope 3211. During assembly, the guide arc surface can slide along the guide slope, which facilitates the anti-disengagement plate to be fastened in the limiting groove. The limiting slope can be engaged in the limiting groove, which can ensure a tighter connection between the anti-disengagement plate and the plug frame, and prevent the female terminal from loosening or falling off.

[0027] like Figure 1 and 3 As shown, the female housing 3 has a insertion groove 33 that mates with the male housing 1. An elastic buckle plate 34 is installed within the insertion groove 33. Two symmetrical protrusions 12 are arranged on the male housing 1, passing through the insertion groove 33. A locking block 13, which engages with the elastic buckle plate 34, is located between the two protrusions 12. The elastic buckle plate, with its concealed design within the insertion groove, prevents accidental unlocking of the locking block due to external force, ensuring reliable connection between the male and female housings. One end of the elastic buckle plate 34 has an unlocking pressing part 341, and the other end has a locking hole 342 that engages with the locking block 13. The elastic buckle plate engages with the locking block via a buckle, ensuring a tighter connection between the male and female housings. A guide slot 35 is provided within the female housing 3, and a guide protrusion 14 passes through the guide slot 35 on the male housing 1. The guide bumps serve a guiding function, ensuring smooth insertion of the male and female rubber shells.

[0028] The sealing ring inside the mating cavity of the male and female housings prevents rainwater from entering the connector from the connection point between the male and female housings. The sealing plug also prevents rainwater from entering the connector from the external wiring harness, male terminal wiring hole, and female terminal wiring hole. The multi-directional sealing structure design provides better waterproof performance.

[0029] The above description is only one embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model; the scope of protection of the present utility model is defined by the claims in the claims, and all equivalent changes and modifications made in accordance with the utility model are within the scope of protection of the present utility model patent.

Claims

1. A waterproof connector comprising a male housing, a male terminal disposed in the male housing, a female housing, and a female terminal disposed in the female housing, characterized by: The male and female rubber shells are interlocked, forming an interlocking cavity. A sealing ring is provided in the interlocking cavity to seal with the male and female rubber shells. The male and female rubber shells are respectively provided with male terminal wiring holes and female terminal wiring holes for external wire harnesses to pass through. A sealing plug is provided in the male terminal wiring hole and female terminal wiring hole respectively. The external wire harness passes through the sealing hole of the sealing plug and is connected to the male terminal and female terminal respectively.

2. The waterproof connector according to claim 1, characterized by: The sealing ring has multiple sealing protrusions on both sides that fit onto the male and female rubber shells.

3. The waterproof connector according to claim 1, characterized by: The female terminal has a plug-in frame that mates with the male terminal, and the male terminal has a insert that passes through the plug-in frame.

4. The waterproof connector according to claim 3, characterized by: The insertion frame is provided with a contact spring, and the tail of the contact spring abuts against one side of the insertion piece.

5. The waterproof connector according to claim 4, characterized by: The insertion frame is provided with a contact protrusion, which abuts against the other side of the insert.

6. The waterproof connector according to claim 3 or 4, characterized in that: The plug-in frame is provided with a limiting groove, and the mother shell is provided with an anti-disengagement plate that engages with the limiting groove.

7. The waterproof connector according to claim 6, characterized by: The anti-disengagement plate has a protrusion at one end that engages with the limiting groove. The protrusion facing the male housing has a limiting inclined surface that engages with the limiting groove. The protrusion facing away from the male housing has a guide inclined surface. The plug-in frame has a guide arc surface that engages with the guide inclined surface.

8. The waterproof connector according to claim 1, characterized by: The female rubber shell is provided with a insertion groove that mates with the male rubber shell. An elastic buckle plate is provided in the insertion groove. Two protrusions are symmetrically arranged on the male rubber shell and inserted into the insertion groove. A locking block that engages with the elastic buckle plate is provided between the two protrusions.

9. The waterproof connector according to claim 8, characterized by: The elastic buckle has an unlocking pressing part at one end and a locking hole at the other end that engages with the locking block.

10. The waterproof connector according to claim 1, characterized by: The female rubber shell is provided with a guide slot, and the male rubber shell is provided with a guide protrusion that passes through the guide slot.

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